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2000SPL6  test set up. Adelaide, southern suburbs, looking north over the city.

Toshiba Satellite laptop. Huawei E160 USB modem. 10dB step attenuator. 

Conclusions: Speed is quite good with wireless modems and would be better than ADSL in many cases which typically runs at around 1500 kbps. Speed depends to a degree on the signal strength. The modem without an antenna cable plugged in gave -85dBm and good speed but that was outside the house. Inside the house speed was around 1000 kbps and dropped back to 900 MHz GPRS sometimes. If it drops out of 3G (blue light) back to GPRS (green light) the performance is lame and typically that of old dial up speed - 56kbps. Usually the modem will idle in 3G WCDMA (dark blue light) and automatically step to 3.5G HSDPA (light blue light) on downloads. Try to avoid drop back to 2G (green light) by investing in an antenna. After all, you want something that works.

2000SPL4 test set up. Adelaide, southern suburbs, looking north over the city.

Toshiba Satellite laptop. Huawei E160 USB modem. 10dB step attenuator. 

Conclusions: The 2000SPL4 was tested slightly later in the morning. Speed a bit slower.

Given that a fairly basic test set up was used with off-air signals and there is some experimental error, fading, and different network loadings, the antenna gains correlate roughly, and the attenuator steps correlate roughly with the signal strength indicator RSSI. 

The 2000SPL4 performs well for a compact parabolic grid antenna. 

If you want to invest in a bit more fade margin then the 2000SPL6 will do nicely.

Now run the speed test below on your modem. 

Broadband Speed Checker available at: http://broadbandguide.com.au/broadband-speed-test

MOBILE WIRELESS BROADBAND - PROFESSIONAL INSTALLATIONS OR DIY 

Huge range of grid-pack antennas and yagis available

For high speed broadband 3G and 4G 

For wireless phone 

For cell phone fringe reception

850 MHz, 900 MHz,  1.8 GHz, 2.1 GHz for Virgin, Vodafone, Telstra, Optus, 3 

Combine a grid-pack 2.1 GHz and a yagi 900 MHz as shown here, with one of our diplexers and get 2.1 GHz broadband and 900 MHz GSM telephone.

Three combinations possible:

1. Highest Gain: 600mm 2100 MHz grid-pack (18.5dBi) + 12 element 900 MHz yagi (12dBi)  

2. High Gain: 400mm 2100 grid-pack (13.5dBi) + 5 element 900 MHz yagi (9dBi)

3. Medium Gain: LPDA 2100 MHz 11dBi + 9.5dBi 900 MHz 

The difference in gains between 900MHz  and 2100MHz  in combination 1, or combination 2, is equal to the aperture path loss 20 log 2100/900 = 7dB.

Therefore the twin antenna systems (one grid-pack and one yagi) are matched.

If you just want 2.1 GHz 3G phone, and 3.5G UMTS/HSDPA internet broadband, (eg Adelaide metro) then all you need is a 2.1 GHz antenna. 

900 MHz antennas give drop back capability to 2G GSM phone and 2.5G GPRS internet data.  Optus Yes G (3G) now 900 MHz rural areas.

Customers typically report that with our antennas and cables they go from 

1.  1 or 2 bars GPRS (inside house) to 4 bars HSDPA with TDJ-2000SPL4 

2.  -92dBm (inside house) to -50dBm rock solid signal with TDJ-2000SPL6

For Telstra Next G HSDPA (Telstra's version of 3G which is on 850 MHz) use our 850 MHz yagis and grid-pack antennas.

FAQ: Do I need a high gain antenna ?

You need to consider fade margins as it is wireless technology. Two main types of fading occur: 

Rayleigh fading, caused by multi-path, and Log-normal fading, which is produced by shadowing or signal diffraction from obstructions.

Higher gain antennas will produce a more reliable result.

Speeds: 

GPRS: up to 114 kbps down

UMTS: up to 2 Mbps down

HSDPA: up to 7.2Mbps down 

HSPA: up to 7.2Mbps down, 2.0 Mbps up 

Speeds will usually be slower (depends on your ISP and Plan)

Check with your telco: 

You need 850 MHz antennas for Telstra city and country.

You need  2.1 GHz antennas for the other telcos in the city.

You need 900 MHz for Optus Yes G (3G) in country areas.

Check with your network service provider for what is needed for your service area.

FME plug to MC card cable, 500mm long  (others available below)

Adaptor 3152 FME jack to SMA plug $4.00

Adaptor 3134 FME jack to SMA jack $4.75

Connect your modem or data card to our antennas

MODEM AND DATA CARD PATCH CABLES:

(small selection shown here - there are many - contact us)

CRC9 MS-147 MS-151 M-198 TS-9 SMA SSMB MC-LUCENT

Dodo: Huawei (hwah-way) E160E USB modem $21.95 (broadband)

Virgin: GlobeSurfer modem $21.95 (phone and broadband)

Virgin: Huawei (hwah-way) E169 USB modem $21.95 (broadband)

Vodafone: Merlin U360 $21.95

Vodafone: Huawei (hwah-way) E160 $21.95

Vodafone: Huawei (hwah-way) E169 $21.95

Vodafone: Huawei (hwah-way) E160G $21.95

Vodafone: Huawei (hwah-way) E618 (red PCMCIA card) $21.95

Vodafone: Huawei (hwah-way) E620 (red PCMCIA card) $21.95

Telstra: ZTE MF332 Turbo Card (orange PCMCIA card) $21.95

Telstra: Sierra Wireless Aircard 875 $21.95

Telstra: Sierra Wireless Aircard 880 $21.95

Telstra: Netcomm 7.2 Gateway $21.95

Telstra: Netcomm 3G9WB $21.95

Optus: Express Card E800 $21.95

Optus: Merlin U360 $21.95

Optus: Huawei (hwah-way) E618 $21.95

Optus: Huawei (hwah-way) E160 $21.95

Optus: Huawei (hwah-way) E169 $21.95

Optus: Huawei (hwah-way) E160G $21.95

Three: Merlin U360 $21.95

Three: Huawei (hwah-way) E618 $21.95

Three: Huawei (hwah-way) E160 $21.95

Three: Huawei (hwah-way) E169 $21.95

Three: Huawei (hwah-way) E160G $21.95

Maxon: MM-5500 Max card $21.95

Kyocera: KPC-650 $21.95

Others: Call us

Patch cable: N plug / SMA plug, RG58 200mm $21.95

Patch cable: N plug / SMA RP plug, RG58 200mm $21.95

Connector: 3236 N plug / FME jack $5.75

Virgin E169 USB stick

Virgin GlobeSurfer

Telstra PCMCIA

 Telstra Netcomm 

Optus Express Card

Vodafone PCMCIA

ANT900Q2P1 - SMA

Nifty antenna for SMA modems.

890-960 MHz for GSM Yes G

$6.90

ANT900Q2P1 - SMA

Fitted with SMA plug for direct connection to 850/900 MHz modems.

ANT900Q2P - SMA

For both Next G 850 MHz and GSM 900 MHz

$7.40

ANT900Q2P - SMA

Fitted with SMA plug for direct connection to 850/ 900 MHz modems.

ANT2100Q2P

2.15dBi gain

SMA plug for 3G modems

$6.25

ANT2100Q2P

Designed for 2.1 GHz cell phone modems 2.15dBi (unity gain)

Fitted with SMA plug (male) for direct connection to 3G and 3.5G modems.

ANT2100Q5P

5dBi gain

SMA plug for 3G modems

$9.10

ANT2100Q5P  

Designed for 2.1 GHz cell phone modems 5dBi.

Fitted with SMA plug (male) for direct connection to 3G and 3.5G modems.

2100CT Desktop antenna for 2.1 GHz modems eg Virgin $49.95

see also mobile cell phone 

2100CT 

Designed for Radio Specialists for the 2.1 GHz frequency band eg 3G Optus, Telstra, Vodafone, Virgin, etc, HSDPA. Light weight and compact size, rubber base that will not mark desktops.

ANT483 multi-band 5dB 900/1800/2100 indoor, or mobile $49.95

see also mobile cell phone 

Broadband wall plate connection $24.65. $15.35 without cable.

Stylish finish to suit any decor.

Standard electrical GPO wall plate size 77mm x 117mm.

Complete with 200mm tail of RG174 cable with N plug to connect to your RU400 extension cable. Other lengths and RG58 also available.

SMA plug allows the cable tail to be drawn through a hole in the wall in cavity wall installs.

Connect the tail to your RU400 cable, drop it down the wall cavity and with a wire hook draw the cable tail out through the hole in the wall (or use a draw wire first attached to the tail).

Then connect it to the back of the wall plate and screw the wall plate to the wall.

Cable with FME plug and MC plug for Virgin modem, with SMA adaptor, fitted to wall plate

Broadband wall plate insert SMA $7.45. 

This is an insert that will fit in existing wall plates and architrave/skirting board plates. The cabling is the same as above. 

N plug / SMA plug 200mm RG174 patch cable $15.95

Low loss RU400 extension cable fitted with N plug and N jack

5m is approx 0.5dB at 900 MHz, 1dB at 2.1 GHz

Others available made to order

Half inch heliax 1250SF (similar to LDF4-50) 15m is approx 1dB at 900 MHz

With N plug and N jack fitted and sleeved 

Rubber self amalgamating tape to seal up the connection at the antenna:

10m length 19mm wide by 0.8mm thick $19.95. 300 mm cut length $2.50 

You stretch the tape, then wrap it around the connectors and then squeeze it with your hand and it fuses together and makes a watertight seal.

If you just use the low loss cable above and hang it down the wall without an install kit you need the N plug to FME jack adaptor below.

Connect it to the end of the cable and then connect your patch cable to it.

3236 N plug / FME jack $5.75

Broadband antenna installation kit

It's easy. Now all you need is one of the antennas below

But which one ? 

If in doubt ask us here 

mail@radiospecialists.com.au

10dB Coupler

Combines a mobile phone and a broadband modem on one antenna.

35 dB isolation between the two devices.

Q: Why use it? 

A: So that the transmitter of one device does not swamp the receiver of the other device, or in the worst case damage it, and so that 50 ohms impedance is maintained.

Q: Can't I just use a "T" piece, or a power divider ?

A: No. You have no isolation. The full transmit power of the phone will go into the modem. 

IN: antenna

OUT: to broadband modem with insertion loss of approx 0.8dB

C: to mobile phone, coupling loss of 10dB.

Isolation between C (phone) and OUT (modem) is 35dB.

If you have a -85dBm signal for your broadband (high speed threshold).

You still have a -95dBm signal for your phone (good phone signal).

The bonus is you get 35dB isolation between the two devices though.

A small reduction in the received phone signal of 10dB gives you isolation between the two devices of 35dB.

Output of a Telstra ZTE T2 Discovery 2 was measured as +16dBm (40mW) on a spectrum analyzer. This is a blue tick phone for rural use. 

In this case 35dB isolation gives -19dBm (40 milliwatts becomes 12 microwatts). 

$81.90

10dB Coupler 

Designed to combine mobile phone and broadband modem into one antenna

for 850 / 900 / 1800 / 2100 MHz band systems.

35dB isolation between your phone and your modem.

HL-0825F Diplexer - Antenna Combiner

Combines two cell phone bands 824 to 960 MHz and 1700 to 2500 MHz

Now you can run a high gain grid-pack antenna and a high gain yagi

Handles 20 watts of power for broadband 

$107.95

HL-0825F 

Designed to combine the 2G 850 / 900 MHz band systems with the 3G 2.1 GHz band.

Maintain your wireless broadband and phone system integrity with fallback from 3G to 2G. 

Your modem supports it, now your high gain antenna system can also.

4G LTE

1.8 GHz 

Grid-pack antenna. Commercial grade quality.

Sturdy cast aluminium grid for best result. (not steel wire grid)

$128.95 Value item 1800SPL4 1.8 GHz

1800SPL4 

Designed for Radio Specialists for the 1.8 GHz frequency band eg Telstra 4G LTE.

High gain, high front/back ratio, light weight and compact size, low wind resistance.

4G LTE 

1.8 GHz

Grid-pack antenna. Commercial grade quality. 

Sturdy cast aluminium grid for best result. (not steel wire grid)

Value item $148.95 1800SPL6 1.8GHz

1800SPL6 

Designed for Radio Specialists for the 1.8 GHz frequency band eg Telstra 4G LTE.

High gain, high front/back ratio, light weight and compact size, low wind resistance.

3G and 3.5G 

2.1 GHz 

Grid-pack antenna. Commercial grade quality.

Sturdy cast aluminium grid for best result. (not steel wire grid)

$128.95 Value item 2000SPL4 2.1 GHz

2000SPL4 

Designed for Radio Specialists for the 2.1 GHz frequency band eg 3G Optus, Vodafone, Virgin, etc, UMTS, HSDPA. High gain, high front/back ratio, light weight and compact size, low wind resistance.

3G and 3.5G 

2.1 GHz

Grid-pack antenna. Commercial grade quality. 

Sturdy cast aluminium grid for best result. (not steel wire grid)

Value item $148.95 2000SPL6 

Big antenna 600 mm wide !!!  Big result !!!

2000SPL6 

Designed for Radio Specialists for the 2.1 GHz frequency band eg 3G Optus, Vodafone, Virgin, etc, UMTS, HSDPA. High gain, high front/back ratio, light weight and compact size, low wind resistance.

3G and 3.5G

2.1 GHz

$169.95 value item 

Commercial grade quality. Cast aluminium grid.

Suitable for users of 3G cell phone 3.5G HSDPA in fringe areas

and commercial link users. Stock item

Big antenna 900 mm wide. High gain 22.5dBi !!!

Big result !!!

2000SPL9 

Designed for Radio Specialists for the 2.1 GHz frequency band eg 3G Optus, Vodafone, Virgin, etc, UMTS, HSDPA. High gain, high front/back ratio, light weight and compact size, low wind resistance.

4G 3.5G 3G 2.5G, 2G GSM, NEXT G, and WiFi

Commercial grade quality

$118.95 multi-band. Value item 0825DS

Cell phone Next G 850 MHz GSM 900 MHz broadband 2100 MHz

HSDPA GPRS UMTS Also WLAN 2400 MHz 

0825DS 

Broadband design including 2.4 GHz ISM frequency band eg wireless LAN it features high gain, high front/back ratio, light weight and compact size, low wind resistance.

NEXT G (Telstra 3G)

850 MHz 

$248.95 value item 

Commercial grade quality. Cast aluminium grid.

Suitable for users of Next G in fringe areas

and commercial link users. With heavy duty bracket. Stock item

Big antenna 1200 mm dia !!! 

It's a big one !!!

Made available for mining companies and remote areas.

900SPD12/850

Designed for the 825-890 MHz frequency band eg Next G cell phone or UHF link, it features high gain, high front/back ratio, light weight and compact size, low wind resistance.

NEXT G (Telstra 3G)

850 MHz 

$169.95 value item 

Commercial grade quality. Cast aluminium grid.

Suitable for users of Next G in fringe areas

and commercial link users. Stock item

Big antenna 900 mm wide !!!

Big result !!!

How good you ask ?

Many users on 40km+ paths eg homesteads in the outback.

Yes they work well.

900SP10/850

Designed for the 825-890 MHz frequency band eg Next G cell phone or UHF link, it features high gain, high front/back ratio, light weight and compact size, low wind resistance.

GSM and 2G and 2.5G

900 MHz

$169.95 value item 

Commercial grade quality. Cast aluminium grid.

Suitable for users of GSM in fringe areas

and commercial link users. Stock item

Big antenna 900 mm wide !!!

Big result !!!

900SP10/900

Designed for the 870-960 MHz frequency band eg GSM/3G cell phone or UHF link, it features high gain, high front/back ratio, light weight and compact size, low wind resistance.

Next G 850 MHz 

GSM and 2G and 2.5G 900 MHz

Commercial grade quality, dual band.

$79.95 5 element 9dBi. Value item 900ACY5

$109.95 12 element 12dBi. Value item 900ACY12

$129.95 18 element 15dBi. Value item 900ACY18

Full band Yagi 800-960 MHz GSM, CDMA, Next G

For commercial users and cell phone. Stock items.

900ACY5    in 5/12/18 elements

Designed for the 800-960 MHz frequency band for CDMA and GSM cell phone and radio links it features high gain, high front/back ratio and good intermodulation capability.

For commercial users and cell phone.

3G and 3.5G

2.1 GHz

Commercial grade quality $89.95 

10 element 12dBi. Value item 2000C10

Full band Yagi 1850-2170 MHz, 2.1 GHz mobile phone band

2000C10 10 elements

Designed for the 2100 MHz frequency band it features high gain, high front/back ratio and good intermodulation capability. 

For commercial users and 2.1GHz cell phone and mobile broadband.

3G and 3.5G

2.1 GHz

Commercial grade quality. Unobtrusive design. $97.95 

9dBi. Value item ANT2100Y9P

Yagi in weatherproof radome.

1920-2170 MHz, 2.1 GHz mobile phone band

ANT2100Y9P 

Designed for the 2100 MHz frequency band it features high gain, high front/back ratio and good intermodulation capability. 

For commercial users and 2.1GHz cell phone and mobile broadband.

3G and 3.5G

2.1 GHz

Commercial grade quality. Unobtrusive design. $103.95 

12dBi. Value item ANT2100Y12P

Yagi in weatherproof radome.

1920-2170 MHz, 2.1 GHz mobile phone band

ANT2100Y12P 

Designed for the 2100 MHz frequency band it features high gain, high front/back ratio and good intermodulation capability. 

For commercial users and 2.1GHz cell phone and mobile broadband.